5-Bromo-4-oxo-5,6,7,8-tetrahydro-4H-cyclohepta[b]pyrrole-1,3-dicarboxylic acid 1-tert-butyl ester 3-methyl ester 、
硫代乙酰胺 在
silica gel 、
乙酸乙酯 、
methanol-dichloromethane 作用下,
以
甲醇 为溶剂,
反应 20.0h,
以to yield 382 mg of 2-Methyl-4,5,6,7-tetrahydro-3-thia-1,7-diaza-cyclopenta[e]azulene-9-carboxylic acid methyl ester as a yellow foam(64%)的产率得到2-Methyl-4,5,6,7-tetrahydro-3-thia-1,7-diaza-cyclopenta[e]azulene-9-carboxylic acid methyl ester